Ariana took 2h longer to drive 360mi on the first day of a t
Ariana took 2h longer to drive 360mi on the first day of a trip than she took to drive 270mi on the second day. If her speed was the same on both days, what was the driving time each day?
 Thank you
Solution
DISTANCE=RATE*TIME
 360=R(T+2)
 270=RT SOLVING FOR R IN THIS EQUATION WE GET
 R=270/T NOW SUBSTITUTING (270/T) FOR R IN THE FIRST EQUATION WE GET
 360=(270/T)(T+2)
 360=(270T+540)/T
 360T=270T+540
 360T-270T=540
 90T=540
 T=540/90
 T=6 HOURS IS THE TIME FOR THE RETURN 270 MILE TRIP.
 6+2=8 HOURS FOR THE FIRST TRIP WHICH TOOK 2 HOURS LONGER.
 THE RATE IS
 270/6=45 MPH

